• Bulletin of the Korean Chemical Society
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• v.27 no.9
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• pp.1477-1480
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• 2006

• Korea-Australia Rheology Journal
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• v.12 no.3_4
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• pp.151-155
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• 2000

A semiconducting poly(naphthalene quinone) radical (PNQR) was synthesized from Friedel-Craft acylation between naphthalene and phthalic anhydride and used as dispersing particles of a dry-base electrorheological (ER) material in silicone oil. Under an applied electric field (E), the dynamic yield stress (${\tau}_{dyn}$) of this ER fluid, obtained from a steady shear experiment with a controlled shear rate mode, was observed to increase with $E^{1.45}$ Based on this relationship, we propose a universal correlation curve for shear viscosity, which is independent of E using a scaling analysis.

• Applied Chemistry for Engineering
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• v.5 no.3
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• pp.413-418
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• 1994

The synthetic steps of sodium(2-(2, 6-dichlorophenyl)amino)phenylacetate were reduced and increased the yield in each steps. The synthetic process was composed to four steps and 2, 6-dichloroaniline and per catalyst in three lots in 80% yield. The steps of acylation and Friedel-Craft reaction were simplified successfully. The final product, diclofenac was obtained in 97% yield by hydrolyzing 1-(2,6-dichlorophenyl)-2-indolinone which was gained in third step with Claisen-solution.